Automatic aib-hose coupling



W. H. STONE. AUTOMATIC AIR HOSE COUPLING. APPLICATION FILED JULY 26.1918.

\ Patented July 22, 1919.

1,31 LIQQS,

Qvwemtoz M5511. 20226,

' tion tothe' pipe.

in the form of a cone.

WALLACE STONE, OI WASHA, MINNESOTA.

AUTOMATIC Ans-Hose COUPLING.

' Application med July 26, 1

To all whom/it may concern:

Be .it known that I, WALLACE H. STONE, a citizen of the United States, residing at Wabasha, in the county of Wabasha and State of Minnesota, have invented new and useful Improvements in Automatic Air-Hose Couplings, of which-the following is a specification.

This invention relates to. automatic air hose couplings and it consists in the novel features hereinafter described and claimed. An object of the invention is to provide a coupling of the character stated which is of simple and durable structure andhaving its parts and features so arranged that the said parts and features of two coupling members may automatically engage each other when brought together whereby air v may freely pass from one coupling member to the other and vice versa.

With this object in view the coupling includes a member having a hollow head portion with an air pipe attached to one side thereof. A nipple is mounted at the opposite side of the head and is ofiset with rela- The head is provided'at, the same side at which the nipple is located withtan opening-which is surrounded by a shoulder having an inturned annular flange. A ring is screwthreaded upon the shoulder and surrounds the flange and is adapted to clamp arubber sleeve. in osition against the flange of the shoulder. I he ring is provided with a centrally located conical portion which engages the sleeve and holds the same- The ring of one coupling is adapted to receive the nipple of the other coupling member, consequently the nipples when the members are in engagement member to with each other constitute pasfor the air from one coupling the other and the sleeves fit snugly about the outer surfaces of the nipples whereby the air is prevented from esca ing.

n the accompanying drawing/:-

Figure 1 is a longitudinal sectional view sageways of the coupling, showingthe members connected together.

Specification of Letters Patent.

cal portion 8 bears Patented July 22, ram.

918. Serial No. 246,893.

. 2 is an elevation of one of the conical clamping rings.

Inasmuch as the coupling members are alike a descrlption of one Wlll sufiice. Each coupling member comprises a hollow head 1 having a pipe 2 attached to one side thereof. The pipe 2 may be connected with an air hose in any suitable manner. A nipple 3; is located atthe opposite side of the head 1 from the pipe 2. The head -1 is provided at the same side as that at which the nipple is located with an opening 4 which is surrounded by an annular boss 5. The boss 5 is provided at its outer end with an inturned annular flange v6. A ring 7 is adapted to be screwed upon the shoulder 5 and the said' ring is provided with acen- I trally located conical portion 8. A sleeve 9 is secured between the peripheral portion of the ring 7 and the flange 6 and the coniagainst the inner surface of the sleeve 9 and holds the intermediate portion of the said sleeve approximately in shape of a cone.

\Nhen the coupling members approach each other the nipple 3 of one member is received within the sleeve 9 of the other member; consequently the said nipples serve as passagewaysfor the air between the heads of the two coupling members. Inasmuch as the air which isreceivedin the said head is under. pressure the sleeves 9' Will be forced. in close contact with the sides of the nipples 3; therefore the air is prevented from leaking between the inner edges of the sleeve and the sides of the nipples.

When the members are moved away from each other the nipples 3 are slid out of engagement with the sleeves 9. The conical portions 8 ofthe ring 7 serve as guides for directing the nipples 1n position in the sleeve and also serves as means for holding the sleeves in proper shape.

Having described the invention what is claimed is v A couplin comprising a hollow head, a pipe attache to one sideof the head, a nipple attached to the opposite side of the head and being offset with relation to the pipe,

.the headbeing provided at the same side said opening, a flexible sleeve clamped beas that at which the nipple is located with tween the ring and the flange and an inan opening, a shoulder surrounding said Wardly extending conical portion bearing 10 opening and having an inturned annular against the conical portion of the sleeve and 5 flange, a ring having screwthread engagelocated interiorly of the head.

ment with the shoulder and provided with In testimony whereof I affix my signature. a central conical portion extending Within WALLACE H. STONE. 

